Almost exactly one year ago, KrebsOnSecurity reported that a mere two hours of searching turned up more than 100 Facebook groups with some 300,000 members openly advertising services to support all types of cybercrime, including spam, credit...

An alleged top boss of a Romanian crime syndicate that U.S. authorities say is responsible for deploying card-skimming devices at Automated Teller Machines (ATMs) throughout North America was arrested in Mexico last week on firearms charges....

Canadian police last week raided the residence of a Toronto software developer responsible for authoring and selling “Orcus RAT,” a software product that’s been marketed on underground forums and used in countless malware attacks...

For the second year in a row, denizens of a large German-language online forum have donated more than USD $250,000 to cancer research organizations in protest of a story KrebsOnSecurity published in 2018 that unmasked the creators of Coinhive,...

Tyler Barriss, a 26-year-old California man who admitted making a phony emergency call to police in late 2017 that led to the shooting death of an innocent Kansas resident, has been sentenced to 20 years in federal prison.

On Feb. 21, 2019, KrebsOnSecurity contacted Italian restaurant chain Buca di Beppo after discovering strong evidence that two million credit and debit card numbers belonging to the companys customers were being sold in the cybercrime underground....

In 2013, the FBI exploited a zero-day vulnerability in Firefox to seize control over a Dark Web network of child pornography sites. The alleged owner of that ring - 33-year-old Freedom Hosting operator Eric Eoin Marques - was arrested...

Hundreds of millions of Facebook users had their account passwords stored in plain text and searchable by thousands of Facebook employees -- in some cases going back to 2012, KrebsOnSecurity has learned. Facebook says an ongoing investigation...

Phone numbers stink for security and authentication. They stink because most of us have so much invested in these digits that theyve become de facto identities. At the same time, when you lose control over a phone number -- maybe its hijacked...

Online advertising firm Sizmek Inc. [NASDAQ: SZMK] says it is investigating a security incident in which a hacker was reselling access to a user account with the ability to modify ads and analytics for a number of big-name advertisers.In...